Lisa, We use software from Chase for this. At each frequency step the generator power starts off several dB below the level determined during calibration (using field probes). Actual forward power is measured using a directional coupler in the antenna feed. The modulation is turned on only after the final power level is reached. The amplifier gain is left at maximum. All equipment is allowed to warm up fully prior to use. Scott > -----Original Message----- > From: [email protected] [SMTP:[email protected]] > Sent: Tuesday, April 06, 1999 1:59 PM > To: [email protected] > Subject: ? on EN 50140 - help! > > > > Could someone please clarify the following : the test procedure for EN > 50140 > states "the frequency range is swept from 80 MHz to 1000MHz, using the > power > levels established during the calibration process, and with the signal 80% > amplitude modulated with a 1 kHz sinewave pausing to adjust the RF signal > level > or to switch oscillators and antennas as necessary" > > Does this mean that the modulation is to be turned on and off during the > stepping or sweeping of frequency? I have never heard of doing this but I > have > been asked to respond to the question. Can anyone shed some light as to > why > someone would interpret it that way?? > > > thank you!!! > > Lisa > > > > --------- > This message is coming from the emc-pstc discussion list. > To cancel your subscription, send mail to [email protected] > with the single line: "unsubscribe emc-pstc" (without the > quotes). For help, send mail to [email protected], > [email protected], [email protected], or > [email protected] (the list administrators).
--------- This message is coming from the emc-pstc discussion list. To cancel your subscription, send mail to [email protected] with the single line: "unsubscribe emc-pstc" (without the quotes). For help, send mail to [email protected], [email protected], [email protected], or [email protected] (the list administrators).
